If you look in /System/Library/PreferencePanes you will find both Battery.prefpane and EnergySaver.prefpane. The EnergySaver.prefpane is version 9 copyright 2001-2015 and is 5,000,490 Bytes in size while Battery.prefpane is version 1 copyright 2020 and is 2,440,237 Bytes. I haven't opened either to examine the code to fully analyze the specific functionality of each, but it would appear they are significantly different.

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein